Problem I
Bar Shelf — Problem Statistics

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Submissions	2980
Accepted submissions	1717
Submission ratio	57.62%
Authors	590
Full solves [?]	230
Full solve Ratio	38.98%

#	User	Score	Language	Date
1	Thore Husfeldt	3	C	2019-11-29 21:38:20
2	Vraj Patel	3	C	2020-04-18 03:54:26
3	Jonathon Arbaugh	3	C	2020-05-16 04:15:12
4	James Rettie	3	C	2022-08-08 11:45:20
5	Rasmus Borup Hansen	2	C	2021-05-01 17:55:46
6	Mustapha Slimani	1	C	2020-05-16 02:41:38
7	Gabriel Stanculescu	1	C	2021-09-20 21:06:42
8	Marcus Henrik Simonsen	1	C	2024-09-29 16:24:05

#	User	Score	Language	Date
1	Kasper Kabell	3	C#	2025-01-22 10:25:23
2	Mathias Brännström	3	C#	2025-01-24 10:08:47
3	Anssi Lahtinen	3	C#	2025-01-25 21:42:28
4	Hidden user	3	C#	2025-09-24 12:23:34
5	Jacob Hellum	2	C#	2025-01-22 11:21:11
6	Asger Schou Jacobsen	2	C#	2025-02-09 20:41:32
7	Julian Brandt	1	C#	2019-11-29 16:39:49
8	Marek Kisiel	1	C#	2019-11-29 17:45:48
9	Peter Konnerup Moss	1	C#	2019-11-29 18:47:52
10	Johan Litsfeldt	1	C#	2021-03-29 23:23:45

#	User	Score	Language	Date
1	Søren Debois	2	F#	2019-11-29 18:30:21
2	Jesper Bengtson	1	F#	2019-11-29 18:31:03

#	User	Score	Language	Date
1	Juan Miguel Vilar	3	Haskell	2020-08-27 18:01:21
2	Udo Stenzel	3	Haskell	2024-06-29 21:19:40
3	Fabian Mitterwallner	3	Haskell	2025-02-12 13:47:38
4	Åsmund Kløvstad	2	Haskell	2024-10-08 14:04:07
5	Marco Carbone	1	Haskell	2019-12-01 16:28:08
6	Nicholas Marsh	1	Haskell	2024-06-29 20:15:26

#	User	Score	Language	Date
1	Jacob Mølby	2	JavaScript (Node.js)	2020-04-19 12:48:16

#	User	Score	Language	Date
1	Christian Pilegaard Cederquist	3	JavaScript (SpiderMonkey)	2023-03-07 16:18:51
2	Bjørn Chr. Soltvedt	1	JavaScript (SpiderMonkey)	2019-12-23 06:14:07

#	User	Score	Language	Date
1	Timothy Gaede	1	Julia	2024-07-20 05:40:17

#	User	Score	Language	Date
1	Søren Debois	2	OCaml	2019-11-30 00:12:02

#	User	Score	Language	Date
1	Måns Magnusson	3	Python 2	2019-11-29 17:30:43
2	Maj Stenmark	3	Python 2	2019-12-02 20:15:09
3	Andreas Björklund	3	Python 2	2019-12-17 15:42:47
4	Lars Åström	3	Python 2	2020-03-11 10:22:54
5	Riko Jacob	3	Python 2	2020-04-04 18:57:00
6	Viktor Bello Thomsen	3	Python 2	2020-04-19 16:59:55
7	Mikkel Hooge Sørensen	2	Python 2	2019-11-29 17:39:15
8	Martin Aumüller	2	Python 2	2019-12-01 11:59:24
9	Thomas Feld	2	Python 2	2019-12-02 14:03:03
10	Hidden user	2	Python 2	2019-12-09 13:44:50

#	User	Score	Language	Date
1	Andreas Severin Hauch Trøstrup	3	Ruby	2023-05-14 15:14:04
2	Frederik Petersen	3	Ruby	2023-10-27 13:15:51
3	Andreas Guldborg Hansen	3	Ruby	2024-03-26 12:38:55

#	User	Score	Language	Date
1	Nathan Koppel	3	Rust	2022-03-07 01:52:47
2	Daniel Anker Hermansen	3	Rust	2022-03-31 22:13:56
3	Benjamin Sølvberg Buan	3	Rust	2022-11-10 18:02:08
4	Adrian Borup	3	Rust	2023-03-23 21:32:17
5	Iker Lissarrague	3	Rust	2023-03-28 06:55:14
6	Jonathan Cederlund	3	Rust	2023-05-04 13:57:43
7	Joris Kerkhoff	3	Rust	2024-09-20 16:06:16
8	Mathias Brännström	3	Rust	2025-01-22 21:19:44
9	Jonas Ulsnes Jørgensen	3	Rust	2025-04-15 13:21:59
10	Ahmet Talha Öztunca	2	Rust	2023-08-08 15:12:43

#	User	Runtime	Language	Date
1	James Rettie	0.23 s	C	2022-08-08 11:45:20
2	Jonathon Arbaugh	0.25 s	C	2020-05-16 04:15:12
3	Vraj Patel	0.38 s	C	2020-04-18 03:54:26
4	Thore Husfeldt	0.39 s	C	2019-11-29 21:38:20

#	User	Runtime	Language	Date
1	Kasper Kabell	0.12 s	C#	2025-01-27 15:55:05
2	Hidden user	0.28 s	C#	2025-09-24 12:23:34
3	Anssi Lahtinen	0.30 s	C#	2025-02-13 23:12:07
4	Mathias Brännström	0.47 s	C#	2025-01-24 10:22:17

#	User	Runtime	Language	Date
1	Lim Li	0.05 s	C++	2023-10-03 16:18:04
2	Evan Michael Bailey	0.06 s	C++	2021-01-02 21:23:56
3	Hidden user	0.06 s	C++	2022-01-17 17:02:11
4	Marc Phua	0.06 s	C++	2022-01-18 04:50:58
5	Hidden user	0.06 s	C++	2022-11-17 03:32:27
6	Tan Chee Heng	0.06 s	C++	2023-01-23 18:28:19
7	Atli Fannar Franklín	0.06 s	C++	2023-12-14 14:47:46
8	Ritul Kumar Singh	0.06 s	C++	2024-01-28 02:13:37
9	Jérôme Mayolet	0.06 s	C++	2024-09-13 22:48:51
10	Oskar Haarklou Veileborg	0.09 s	C++	2020-03-21 10:21:02

#	User	Runtime	Language	Date
1	Udo Stenzel	1.04 s	Haskell	2024-06-29 21:19:40
2	Fabian Mitterwallner	1.27 s	Haskell	2025-02-12 14:15:01
3	Juan Miguel Vilar	1.61 s	Haskell	2020-08-27 18:01:21

#	User	Runtime	Language	Date
1	Bjørn Dons	0.36 s	Java	2023-09-14 15:58:16
2	Bjarke Brodin	0.52 s	Java	2021-02-17 14:54:59
3	Brent Yorgey	0.58 s	Java	2019-12-01 04:46:16
4	Crystal Sharpe	0.59 s	Java	2021-02-20 00:52:12
5	Lee Yi Heng	0.60 s	Java	2024-01-26 06:06:22
6	Doug Goodman	0.61 s	Java	2022-05-13 17:00:00
7	Troels Bjerre Lund	0.69 s	Java	2019-11-29 22:14:33
8	Emil Bak-Møller	0.72 s	Java	2021-02-14 15:00:45
9	Mike Nguyen	0.88 s	Java	2021-01-04 03:24:27
10	Jacob Grum	1.61 s	Java	2023-04-20 10:12:45

#	User	Runtime	Language	Date
1	Christian Pilegaard Cederquist	1.00 s	JavaScript (SpiderMonkey)	2023-03-07 16:18:51

#	User	Runtime	Language	Date
1	Lars Åström	0.38 s	Python 2	2020-03-11 10:22:54
2	Viktor Bello Thomsen	0.46 s	Python 2	2020-04-19 16:59:55
3	Måns Magnusson	0.57 s	Python 2	2019-11-29 17:30:43
4	Maj Stenmark	0.57 s	Python 2	2019-12-02 20:15:09
5	Riko Jacob	0.72 s	Python 2	2020-04-04 18:57:00
6	Andreas Björklund	1.79 s	Python 2	2019-12-17 15:42:47

#	User	Runtime	Language	Date
1	Hidden user	0.40 s	Python 3	2023-05-11 12:28:48
2	Philip Mørch	0.40 s	Python 3	2024-05-15 20:39:05
3	Nicholas Russell Saerang	0.43 s	Python 3	2024-01-23 07:11:58
4	Andreas Severin Hauch Trøstrup	0.48 s	Python 3	2023-05-16 13:40:02
5	Paco Criado	0.48 s	Python 3	2025-11-17 23:57:55
6	Viktor Bello Thomsen	0.49 s	Python 3	2020-08-18 13:36:09
7	Tim Poulsen	0.50 s	Python 3	2020-09-15 16:31:32
8	Hidden user	0.50 s	Python 3	2020-10-09 17:23:20
9	Hidden user	0.53 s	Python 3	2026-02-13 09:03:17
10	Martin Aumüller	0.57 s	Python 3	2021-02-09 18:09:24

#	User	Runtime	Language	Date
1	Andreas Guldborg Hansen	0.68 s	Ruby	2024-03-26 12:38:55
2	Andreas Severin Hauch Trøstrup	0.76 s	Ruby	2024-03-26 12:45:55
3	Frederik Petersen	1.15 s	Ruby	2023-10-27 13:15:51

#	User	Runtime	Language	Date
1	Joris Kerkhoff	0.05 s	Rust	2024-09-20 20:04:38
2	Daniel Anker Hermansen	0.11 s	Rust	2022-03-31 22:13:56
3	Iker Lissarrague	0.14 s	Rust	2023-03-28 06:55:14
4	Adrian Borup	0.16 s	Rust	2023-03-23 21:32:17
5	Mathias Brännström	0.24 s	Rust	2025-01-23 09:44:54
6	Jonathan Cederlund	0.35 s	Rust	2023-05-04 13:57:43
7	Jonas Ulsnes Jørgensen	0.57 s	Rust	2025-04-15 13:24:24
8	Benjamin Sølvberg Buan	0.81 s	Rust	2022-11-10 18:02:08
9	Nathan Koppel	0.97 s	Rust	2022-03-07 01:52:47

#	User	Length	Language	Date
1	Vraj Patel	2513	C	2020-04-18 03:54:26
2	Thore Husfeldt	3344	C	2019-11-29 21:38:20
3	James Rettie	3932	C	2022-08-08 11:45:20
4	Jonathon Arbaugh	4971	C	2020-05-16 04:15:12

#	User	Length	Language	Date
1	Kasper Kabell	3210	C#	2025-01-27 15:57:49
2	Hidden user	4411	C#	2025-09-24 12:23:34
3	Anssi Lahtinen	5699	C#	2025-01-28 22:56:04
4	Mathias Brännström	12376	C#	2025-01-24 10:12:45

#	User	Length	Language	Date
1	Rishi Saran Vijayarajan	499	C++	2023-01-01 04:42:57
2	Yeung Man Tsung	635	C++	2023-01-23 14:42:46
3	Filip Hovorka	651	C++	2024-08-16 16:01:48
4	Elias Lolck	665	C++	2023-11-28 00:30:45
5	Christian Yongwhan Lim	748	C++	2023-07-20 04:39:01
6	Noah Hessen Bjerke	785	C++	2022-11-16 22:55:42
7	Gao Tianrun	790	C++	2024-01-23 09:42:31
8	Toh Xuan Ning Jeanne	794	C++	2022-01-22 14:08:37
9	Neill Johnston	823	C++	2020-08-18 20:52:47
10	Marcus Xu	863	C++	2023-01-24 16:26:55

#	User	Length	Language	Date
1	Juan Miguel Vilar	1811	Haskell	2020-08-27 18:01:21
2	Udo Stenzel	3038	Haskell	2024-06-29 21:19:40
3	Fabian Mitterwallner	3131	Haskell	2025-02-12 14:15:01

#	User	Length	Language	Date
1	Bjarke Brodin	1482	Java	2021-02-17 14:54:59
2	Crystal Sharpe	2273	Java	2021-02-20 00:52:12
3	Jacob Grum	2580	Java	2023-04-20 10:12:45
4	Thomas Sørup Bavnhøj	2647	Java	2023-04-18 15:56:11
5	Thor Liam Møller Clausen	2669	Java	2023-04-18 15:31:05
6	Martin Aumüller	2761	Java	2023-06-07 13:14:50
7	Brent Yorgey	4993	Java	2019-12-01 04:46:16
8	Emil Bak-Møller	6716	Java	2021-02-14 15:00:45
9	Bjørn Dons	6902	Java	2023-09-14 15:58:16
10	Mike Nguyen	7034	Java	2021-01-04 03:24:27

#	User	Length	Language	Date
1	Christian Pilegaard Cederquist	2265	JavaScript (SpiderMonkey)	2023-03-07 16:18:51

#	User	Length	Language	Date
1	Viktor Bello Thomsen	911	Python 2	2020-08-18 13:47:54
2	Lars Åström	1128	Python 2	2020-03-11 10:22:54
3	Måns Magnusson	1365	Python 2	2019-11-29 17:30:43
4	Maj Stenmark	1365	Python 2	2019-12-02 20:15:09
5	Riko Jacob	1997	Python 2	2020-04-04 18:57:00
6	Andreas Björklund	2027	Python 2	2019-12-17 15:42:47

#	User	Length	Language	Date
1	David Llorens	464	Python 3	2025-08-09 14:53:02
2	Nicholas Russell Saerang	660	Python 3	2024-01-23 07:13:06
3	Christian Lebeda	818	Python 3	2021-02-10 23:06:31
4	Hidden user	853	Python 3	2020-10-09 17:23:20
5	Viktor Bello Thomsen	905	Python 3	2020-08-18 13:36:09
6	Thor Liam Møller Clausen	1011	Python 3	2023-03-24 10:20:47
7	Philip Mørch	1022	Python 3	2024-05-24 03:21:58
8	Paco Criado	1166	Python 3	2025-11-17 23:57:55
9	Andreas Severin Hauch Trøstrup	1167	Python 3	2023-05-16 13:32:59
10	Iker Lissarrague	1229	Python 3	2023-03-26 22:49:27

#	User	Length	Language	Date
1	Andreas Severin Hauch Trøstrup	1038	Ruby	2023-05-25 12:34:42
2	Frederik Petersen	1038	Ruby	2023-10-27 13:15:51
3	Andreas Guldborg Hansen	1182	Ruby	2024-03-26 12:38:55

#	User	Length	Language	Date
1	Jonas Ulsnes Jørgensen	1522	Rust	2025-04-15 13:24:24
2	Nathan Koppel	2141	Rust	2022-03-07 01:52:47
3	Joris Kerkhoff	2233	Rust	2024-09-20 16:54:44
4	Adrian Borup	2401	Rust	2023-03-23 21:32:17
5	Iker Lissarrague	2972	Rust	2023-03-28 06:55:14
6	Benjamin Sølvberg Buan	3361	Rust	2022-11-10 18:02:08
7	Jonathan Cederlund	4338	Rust	2023-05-04 13:57:43
8	Daniel Anker Hermansen	8441	Rust	2022-03-31 22:13:56
9	Mathias Brännström	10109	Rust	2025-01-24 16:36:37

Solution running time distribution